"Any free day is going to be one we try to take advantage of," Matheny said on Monday. "We have a long stretch here."
By turning the rotation over without any changes, that would leave John Gast in line to start on Saturday. It would be his third spot start in place of right-hander Jake Westbrook, who is on the disabled list with a right elbow injury.
Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. This story was not subject to the approval of Major League Baseball or its clubs.